The weight sits closer to your center of gravity and you feel less lower back stress. Reverse direction and lock out at your hips, not your lower back. I was thinking about mixing in some cardio 5km runs as well on my non gym days. When faced with limited tools, you retain choice of attitude. The 30-Minute Full-Body Dumbbell Workout Medically reviewed by Peggy Pletcher, M.S., R.D., L.D., CDE — Written by Jesica Salyer — Updated on May 7, 2016 Share on Pinterest Back thickness requires a different approach than back width. You're able to move around … [CDATA[// >